351664506 has 24 divisors (see below), whose sum is σ = 772380180. Its totient is φ = 115615296.

The previous prime is 351664459. The next prime is 351664517. The reversal of 351664506 is 605466153.

351664506 is a `hidden beast` number, since 3 + 5 + 1 + 6 + 645 + 0 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 340070481 + 11594025 = 18441^2 + 3405^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 132501 + ... + 135128.

Almost surely, 2^351664506 is an apocalyptic number.

351664506 is an abundant number, since it is smaller than the sum of its proper divisors (420715674).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

351664506 is a wasteful number, since it uses less digits than its factorization.

351664506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267710 (or 267707 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 351664506 is about 18752.7199627147. The cubic root of 351664506 is about 705.8452755549.

The spelling of 351664506 in words is "three hundred fifty-one million, six hundred sixty-four thousand, five hundred six".